I am pretty happy with JSF 2.0 and I am not familiar with Wicket.
If I would switch from JSF 2.0 to Wicket...
- What would I like most in Wicket?
- What would I miss most from JSF 2.0?
I guess it's only possible to answer this question if you have experience with both frameworks.
Please don't compare with JSF 1.x.